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Subject: Re: Is my branching factor normal ?

Author: Steffen Jakob

Date: 03:08:07 07/04/04

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On July 04, 2004 at 05:46:42, Andrew Williams wrote:

>On July 03, 2004 at 22:31:54, Mathieu Pagé wrote:
>
>>Hi !
>>
>>I was wondering, what is a normal branching factor for my program... it use
>>AlphaBeta, iterative deepening, a transposition table and an aspiration search.
>>it's evaluation function is blindly fast (and bad). For the starting position I
>>got branching factor of less thant 2 (time to depth N+1 / Time To depth N).
>>
>>is this normal ?
>>
>><output>
>>MatMoi version: 5.12.2
>>Creer par Mathieu Page
>>Date: Jun 12 2004 19:36:41
>>
>>>st 60
>>>gonow
>>              depth   time  score   variation
>>                1->   0.09   0.00   a2a3
>>                2->   0.13   0.00   a2a3 a7a6
>>                3->   0.17   0.00   a2a3 a7a6 a3a4
>>                4->   0.20   0.00   a2a3 a7a6 a3a4 b7b6
>>                5     0.24   1.00   b2b3 a7a6 c1a3 b7b6 a3e7
>>                5->   0.28   1.00   b2b3 a7a6 c1a3 b7b6 a3e7
>>                6->   0.66  -1.00   b2b3 b7b6 b3b4 c8b7 b4b5 b7g2
>>                7->   1.27   1.00   b2b3 a7a6 a2a3 b7b6 c1b2 c7c6 b2g7
>>                8->   5.38  -1.00   b2b3 a7a6 b3b4 b7b6 a2a3 e7e6 b4b5 a6b5
>>                9->  12.55   1.00   b2b3 a7a6 b3b4 b7b6 e2e3 c7c6 e3e4 d7d6 f1a6
>>
>
>Do you have a bug here? Why would the score go from 0.00 to +1.00 and then to
>-1.00 and then back to +1.00? Before worrying about your branching factor, I
>would look in detail at the apparent problem you have above.

Looking at the PVs I would say he has no qsearch. :)

Greetings,
Steffen.



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